netdev - RE: [patch iproute2] tc: fix command "tc actions del" hang issue

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Date:   Mon, 18 Dec 2017 01:41:43 +0000
From:   Chris Mi <chrism@...lanox.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "jiri@...nulli.us" <jiri@...nulli.us>
Subject: RE: [patch iproute2] tc: fix command "tc actions del" hang issue

> -----Original Message-----
> From: Stephen Hemminger [mailto:stephen@...workplumber.org]
> Sent: Friday, December 15, 2017 1:17 PM
> To: Chris Mi <chrism@...lanox.com>
> Cc: netdev@...r.kernel.org; jiri@...nulli.us
> Subject: Re: [patch iproute2] tc: fix command "tc actions del" hang issue
> 
> On Thu, 14 Dec 2017 18:09:00 +0900
> Chris Mi <chrism@...lanox.com> wrote:
> 
> > If command is RTM_DELACTION, a non-NULL pointer is passed to rtnl_talk().
> > Then flag NLM_F_ACK is not set on n->nlmsg_flags and netlink_ack()
> > will not be called. Command tc will wait for the reply for ever.
> >
> > Fixes: 86bf43c7c2fd ("lib/libnetlink: update rtnl_talk to support
> > malloc buff at run time")
> > Signed-off-by: Chris Mi <chrism@...lanox.com>
> > Reviewed-by: Jiri Pirko <jiri@...lanox.com>
> 
> Thanks for fixing this.
> Applied, but please don't linewrap the fixes tag.
Thank for fixing it. I'll pay attention to it next time.